Before Bart can start analyzing the data, some preliminary steps need to be completed. Discuss these steps briefly. 2. To get a feel for the data Bart wants to obtain some measures of central tendency and dispersion for each single item in the questionnaire. a. Which measures would you use to provide an overview of the items representing the dependent variable and the independent variables of Bart's model (question 1-24)? Why? b. Which measures would you use to provide an overview of the sample characteristics (question 25-28)? Why? 3. In hindsight, Bart is not happy with the way he has measured the age of his participants and for how long they have been a franchisee. What could be the problem? 4. Bart has made 28 pie charts to provide a visual display of the data. Fin Green has told Bart that he also would like to see histograms and box-and-whisker plots for all the items. a. What is a histogram? b. What is a box-and-whisker plot? c. Do you believe that it is a smart idea to provide histograms and box-and-whisker plots for all the items? Why (not)? 5. Because the variables in Bart's model were measured with multi-item scales